63 Dodge Dart wheel change

Parasitic drag is real. You want to dog that slant some more, put a set of heavy 15's, and heavier rear end in. If you are planning a V8 swap( which is harder in a 63) great. But if you are planning on sticking with the slant, I would suggest some 14x5.5 steel wheels, and keep the 7.25. .02

PS: Nice looking car.